A crowd of about 50 people gathered and firefighters tried to revive the imam, but he died on site. He was 46.

A suspect was caught not far from the mosque, La Derniere Heure reported. A second person was injured.

Belgium has about half a million Muslims out of a population of 11 million, Reuters reported. In December, a gunman killed seven people after shooting into a crowd of Christmas shoppers in Liege, in eastern Belgium.